EP2360974A1 - Procédé et station de base pour décider d'un mode de transmission discontinue - Google Patents

Procédé et station de base pour décider d'un mode de transmission discontinue Download PDF

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Publication number
EP2360974A1
EP2360974A1 EP09825777A EP09825777A EP2360974A1 EP 2360974 A1 EP2360974 A1 EP 2360974A1 EP 09825777 A EP09825777 A EP 09825777A EP 09825777 A EP09825777 A EP 09825777A EP 2360974 A1 EP2360974 A1 EP 2360974A1
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EP
European Patent Office
Prior art keywords
drx
parameter
terminal
base station
period
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09825777A
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German (de)
English (en)
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EP2360974B1 (fr
EP2360974A4 (fr
Inventor
De Chen
Jiping Li
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of EP2360974A4 publication Critical patent/EP2360974A4/fr
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method and base station for sending information.
  • a terminal that carries out a non-real-time service generally employs a Discontinuous Reception (DRX) mode.
  • DRX Discontinuous Reception
  • a DRX period adaptable to the service data can be configured on the terminal according to this service characteristic, namely, the characteristic of regular arrival of the service data.
  • the DRX period involves two states: DRX receiving state and DRX sleep state.
  • the terminal starts the transceiver to monitor the service data and control information sent by the base station, and the pilot and broadcast information periodically sent by the base station.
  • the terminal When the terminal is in the DRX sleep state, the terminal shuts down the transceiver, and stops monitoring the service data and control information sent by the base station, and the pilot and broadcast information periodically sent by the base station.
  • a Femto cell is a solution to extending indoor coverage of mobile communication.
  • a Femto cell is installed in a small coverage environment, in which a user initiates voice or data calls through a mobile device such as a mobile phone or a notebook computer.
  • the Femto cell transmits the voice or data calls initiated through the mobile phone or notebook computer to a 3 rd Generation (3G) core network which is based on a standard interface.
  • 3G 3 rd Generation
  • the home access point of a Femto cell is capable of plug-and-play and connectible to any existing Internet Protocol (IP)-based transport networks, and may take the place of a fixed bandwidth access device of households or small enterprises. Therefore, a Femto cell is also known as a home base station.
  • IP Internet Protocol
  • Embodiments of the present invention provide a method and base station for sending information.
  • the base station employs a Discontinuous Transmission (DTX) mode to save time-frequency resources, reduce interference on neighboring cells, and reduce the power consumption.
  • DTX Discontinuous Transmission
  • a method for sending information includes:
  • a base station where the base station includes:
  • the base station determines the DTX parameter of the base station according to the DRX parameter, and sends pilot and broadcast information periodically according to the DTX parameter.
  • the base station After the base station enters the DTX mode, if all user terminals served by the home base station are in the DRX sleep mode, the base station also enters the DTX sleep period. That is, the base station sends no pilot or broadcast information and shuts down the transceiver, thus saving power and time-frequency resources, reducing interference on neighboring cells, and reducing the power consumption.
  • the base station When all terminals are in the DRX mode, the base station enters the DTX mode, thus saving power and time-frequency resources, reducing interference on neighboring cells and reducing the power consumption.
  • FIG. 1 is a schematic diagram of a flowchart of a method for sending information according to the first embodiment of the present invention. The method includes the following steps.
  • the step of determining a DTX parameter of the base station according to the DRX parameter includes:
  • the method Before adjusting or confirming the DRX parameter of the terminal, the method includes the following contents.
  • the base station confirms the DRX parameter of the terminal if the following conditions are fulfilled:
  • the DRX period parameter of the terminal is the same as that of a terminal which is already in the DRX mode, and DRX bias parameter of the terminal is different from the DRX bias parameter of a terminal which is already in the DRX mode; or, the DRX period parameter of the terminal is different from that of a terminal which is already in the DRX mode.
  • the base station needs to adjust DRX bias parameter of the terminal, namely, map the DRX bias of the terminal to a DRX bias not occupied by other terminal, if the following conditions are fulfilled:
  • the DRX period parameter sent by the terminal is the same as that of a terminal which is already in the DRX mode, and the DRX bias parameter of the terminal is also the same as that of a terminal which is already in the DRX mode.
  • the base station may also adjust the periods and DRX bias parameters of all terminals uniformly to a continuous time segment, so that all terminals have the same DRX period, and that the DRX biases of all terminals are adjacent to each other but not overlapped.
  • the content of determining the DTX transmitting period and receiving period of the base station according to the adjusted or confirmed DRX parameter includes that:
  • the base station determines the DTX parameter of the base station according to the DRX parameter, and enters the DTX mode.
  • the base station sends pilot and broadcast information periodically within the DTX transmitting period of the base station according to the DTX parameter.
  • the base station enters the DTX sleep mode. That is, the base station sends no pilot or broadcast information and shuts down the transceiver, thus saving power and time-frequency resources, reducing interference on neighboring cells, and reducing the power consumption.
  • FIG. 2 is a schematic diagram of a flowchart of a method for sending information according to the second embodiment of the present invention. The method includes the following steps.
  • the terminal configures a DRX period adaptable to the service data according to the characteristic of regular and periodical arrival of the service data.
  • the request message carries parameter such as the DRX period and the DRX bias of the terminal.
  • the base station receives the period parameter and the DRX bias parameter sent by the terminal, and compares the received period parameter and the DRX bias parameter.
  • the base station does not need to adjust, but only needs to confirm, the period parameter and the DRX bias parameter, if the following conditions are fulfilled:
  • the DRX period parameter of the terminal is the same as that of a terminal which is already in the DRX mode, and the DRX bias parameter of the terminal is different from that of a terminal which is already in the DRX mode; or, the DRX period parameter of the terminal is different from that of a terminal which is already in the DRX mode.
  • the base station needs to adjust the DRX bias of the current terminal, namely, map the DRX bias of the current terminal to the DRX bias not occupied by other terminal, if the following conditions are fulfilled:
  • the DRX period parameter sent by the terminal is the same as the period parameter of the terminal which is already in the DRX mode, and the DRX bias parameter of the current terminal is also the same as the DRX bias parameter of the terminal which is already in the DRX mode. The details are described below.
  • FIG. 7, FIG. 8 , and FIG. 9 show respectively terminal 1, terminal 2 and terminal 3 that are in the DRX mode.
  • the DRX bias parameter of terminal 1 and terminal 2 are both "1". Therefore, the DRX bias parameter of terminal 2 needs to be adjusted so that it is different from the DRX bias parameter of terminal 1 which is already in the DRX mode. As shown in FIG. 10 , the DRX bias parameter of terminal 2 is adjusted from "1" to "3".
  • the base station If the base station needs to only confirm the period parameter and the DRX bias parameter of the terminal, the base station adjusts its own DTX transmitting period and DTX sleep period according to the DRX parameters of all terminals, so that the receiving periods of all terminals fall within the transmitting period of the base station, as shown in FIG. 6 .
  • the base station If the base station needs to adjust the period parameter and the DRX bias parameter of the terminal, the base station adjusts its own DTX transmitting period and DTX sleep period according to the adjusted DRX period parameters and the DRX bias parameters of all terminals, so that the receiving periods of all terminals fall within the transmitting period of the base station, as shown in FIG. 11 .
  • the base station If any terminal is in the DRX receiving period, the base station is in the DTX transmitting period; when all terminals are in the DRX sleep period, the base station enters the DTX sleep period.
  • the base station sends a DRX mode acknowledgement message to the terminal.
  • the message carries the adjusted or confirmed a DRX parameter such as the period and the DRX bias.
  • the terminal After receiving the acknowledgement message sent by the base station, the terminal enters the DRX mode according to the DRX period parameter and the DRX bias parameter carried in the acknowledgement message.
  • the base station enters the DTX mode according to the adjusted or confirmed DRX parameters of all terminals. If any terminal is in the DRX receiving period, the base station is in the DTX transmitting period.
  • the base station When the terminal is in the DRX receiving period and the base station is in the DTX transmitting period, the base station sends service data and control information to the terminal, and sends pilot and broadcast information periodically.
  • the base station When all terminals are in the DRX sleep period, the base station enters the DTX sleep period, shuts down the transceiver, stops sending data, and buffers the service data and control information. When the terminal gets into the DRX receiving period, the base station resumes sending of the buffered service data and control information.
  • the base station only needs to adjust or confirm the DRX period parameter and the DRX bias parameter of each terminal simply without additional operations like adjusting the period or bias, thus saving power and time-frequency resources.
  • FIG. 12 is a schematic diagram of a flowchart of a method for sending information according to the third embodiment of the present invention. The method includes the following steps:
  • the base station adjusts the DRX period of each terminal to the same value, and adjusts the DRX period parameters and the DRX bias parameters of all terminals, so that they fall within a continuous time segment, and that the biases of all terminals are adjacent to each other but not overlapped.
  • FIG. 13, FIG. 14 , and FIG. 15 respectively show terminal 4, terminal 5 and terminal 6 that are in the DRX mode.
  • the base station adjusts the DRX periods of terminal 4, terminal 5 and terminal 6 to the same value, and adjusts the DRX period parameters and the DRX bias parameters of all terminals, so that they fall within a continuous time segment, and that the biases of all terminals are adjacent to each other but not overlapped.
  • the adjusted DRX biases of terminal 4, terminal 5 and terminal 6 are respectively shown in FIG. 16 , FIG. 17 and FIG. 18 .
  • the base station adjusts its own DTX transmitting period and DTX sleep period according to the adjusted DRX period, so that the transmitting period of each terminal falls within the DTX transmitting period of the base station, and that the DTX sleep period of each terminal falls within the DTX sleep period of the base station.
  • the adjustment is detailed in FIG. 19 .
  • Steps 1204, 1205 and 1206 are respectively similar to steps 104, 105 and 106 in the second embodiment.
  • the base station performs uniform adjustment according to the DRX period and the DRX bias of each terminal so that the DRX receiving period of each terminal falls within the
  • the base station enters the DTX sleep period, shuts down the transceiver, stops sending data, and buffers the service data and control information.
  • the base station resumes sending of the buffered service data and control information, which saves power and time-frequency resources, reduces interference on neighboring cells and avoids starting up and shutting down the transceiver frequently on the base station side.
  • a home base station is provided in the fourth embodiment of the present invention. As shown in FIG. 20a , the home base station includes:
  • the determining module includes a first processing module 221, a second processing module 222, and a first determining module 223. The details are described below:
  • the second processing module 222 is configured to determine the DTX parameter of the base station according to the DRX parameter adjusted or confirmed by the first processing module.
  • the first determining module 223 is configured to adjust the DTX transmitting period and sleep period of the base station according to the adjusted or confirmed DRX period parameter and the DRX bias parameter, so that the receiving periods of all terminals fall within the transmitting period of the base station.
  • the first processing module 221 includes:
  • the base station determines the DTX parameter of the base station according to the DRX parameter, and enters the DTX mode.
  • the base station also enters the DTX sleep period. That is, the base station sends no pilot or broadcast information and shuts down the transceiver, thus saving power and time-frequency resources, reducing interference on neighboring cells, and reducing the power consumption.
  • the software product may stored in computer-readable storage media and incorporate several instructions for instructing a computer device (for example, a personal computer, a server, or a network device) to execute the method specified in any embodiment of the present invention.
  • a computer device for example, a personal computer, a server, or a network device
EP09825777.7A 2008-11-14 2009-11-16 Procédé et station de base pour décider d'un mode de transmission discontinue Active EP2360974B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008102173226A CN101742618B (zh) 2008-11-14 2008-11-14 一种确定非连续发射模式的方法、基站
PCT/CN2009/074957 WO2010054602A1 (fr) 2008-11-14 2009-11-16 Procédé et station de base pour décider d'un mode de transmission discontinue

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EP2360974A1 true EP2360974A1 (fr) 2011-08-24
EP2360974A4 EP2360974A4 (fr) 2012-04-25
EP2360974B1 EP2360974B1 (fr) 2013-07-17

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EP (1) EP2360974B1 (fr)
CN (1) CN101742618B (fr)
WO (1) WO2010054602A1 (fr)

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NTT DOCOMO ET AL: "LTE_ACTIVE DRX control", 3GPP DRAFT; R2-070776, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. St. Louis, USA; 20070209, 9 February 2007 (2007-02-09), XP050133802, [retrieved on 2007-02-09] *
NTT DOCOMO ET AL: "Views on DRX/DTX control in LTE", 3GPP DRAFT; R2-063397, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Riga, Latvia; 20061102, 2 November 2006 (2006-11-02), XP050132870, [retrieved on 2006-11-02] *
QUALCOMM EUROPE: "Signalling in support of DTX/DRX", 3GPP DRAFT; R1-061498, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Shanghai, China; 20060502, 2 May 2006 (2006-05-02), XP050102347, [retrieved on 2006-05-02] *
See also references of WO2010054602A1 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013172672A1 (fr) 2012-05-17 2013-11-21 Samsung Electronics Co., Ltd. Procédé et appareil d'ajustement dynamique de réglages drx d'équipement utilisateur
EP2850746A4 (fr) * 2012-05-17 2015-12-30 Samsung Electronics Co Ltd Procédé et appareil d'ajustement dynamique de réglages drx d'équipement utilisateur
US10075912B2 (en) 2012-05-17 2018-09-11 Samsung Electronics Co., Ltd. Method and apparatus for dynamically adjusting DRX settings of user equipment
WO2018033659A1 (fr) * 2016-08-17 2018-02-22 Nokia Technologies Oy Procédé de mode de veille coordonné en ran pour des économies d'énergie
US11533682B2 (en) 2016-08-17 2022-12-20 Nokia Technologies Oy Method for coordinated sleep mode in RAN for energy savings
WO2021186046A1 (fr) * 2020-03-20 2021-09-23 Sony Group Corporation Procédés de gestion de puissance dans un réseau de communication sans fil, nœuds de réseau et dispositifs sans fil

Also Published As

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US8588831B2 (en) 2013-11-19
EP2360974B1 (fr) 2013-07-17
CN101742618B (zh) 2013-04-24
EP2360974A4 (fr) 2012-04-25
WO2010054602A1 (fr) 2010-05-20
US20110212742A1 (en) 2011-09-01
CN101742618A (zh) 2010-06-16

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